| Flow around a Circular Cylinder with Radial Disturbances at a Low Reynolds Number | |
Lin LM(林黎明) ; Zhong XF(钟兴福); Wu YX(吴应湘)
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| Source Publication | Proceedings of the 23rd (2013) International Offshore and Polar Engineering Conference |
| 2013 | |
| Pages | 387-394 |
| Conference Name | 23rd International Offshore and Polar Engineering Conference, ISOPE-2013 |
| Conference Date | JUN 30-JUL 05, 2013 |
| Conference Place | Anchorage, Alaska, USA |
| Abstract | Based on the idea of geometric disturbance in suppressing vortex induced vibration (VIV), numerical simulations are carried out for a flow past a fixed circular cylinder with different wavy disturbances. Two kinds of disturbances, harmony and cone, are considered. Different wavelengths and wave heights are investigated at a Reynolds number of 100. The introduction of disturbance would increase the drag but reduce the lift for most cases. The local minimum of fluid forces exists, presently, at the non-dimensional wavelength of 6. The typical Kármán vortex is gradually disturbed with the increasing strength of disturbance. Different flow patterns are identified and discussed, such as Ω-type vortex and the complete suppression of vortex shedding. Characteristics of effect of disturbance on the generation and distribution of surface vorticity are presented in detail. |
| Keyword | Radial Disturbance Circular Cylinder Vortex-induced Vibration Suppression Riser |
| Department | LMFS多相流及流固耦合(LHO) |
| ISBN | 978-1-880653-99-9 |
| URL | 查看原文 |
| Indexed By | EI |
| Language | 英语 |
| Document Type | 会议论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/48317 |
| Collection | 流固耦合系统力学重点实验室 |
| Corresponding Author | Lin LM(林黎明) |
| Recommended Citation GB/T 7714 | Lin LM,Zhong XF,Wu YX. Flow around a Circular Cylinder with Radial Disturbances at a Low Reynolds Number[C]Proceedings of the 23rd (2013) International Offshore and Polar Engineering Conference,2013:387-394. |
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